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Fittoniya [83]
3 years ago
9

Which statement best describes the equation CaCO3 + 2HCl → CaCl2 + CO2 + H2O? CaCO3 is a reactant; it is present before the reac

tion occurs. CaCl2 is a reactant; it is present before the reaction occurs. CO2 is a reactant because it is most likely a gas. H2O is a reactant because it is most likely a liquid.
Physics
2 answers:
Marat540 [252]3 years ago
6 0

Answer:

CaCl2 is a reactant

Explanation:

Calcium carbonate (CaCO3) is a reagent, it is found on the left side, what is found on the right side are the products.

azamat3 years ago
4 0

Answer : The correct statement is, CaCO_3 is a reactant; it is present before the reaction occurs.

Explanation :

The given balanced chemical reaction is,

CaCO_3+2HCl\rightarrow CaCl_2+CO_2+H_2O

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

In the chemical reaction, the reactants and products are separated by right arrow.

The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.

In the given balanced reaction,

CaCO_3 and HCl are reactants.

CaCl_2, CO_2 and H_2O are products.

Hence, the correct statement is, CaCO_3 is a reactant; it is present before the reaction occurs.

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